Bending machine



Dec. 25, 1928. 1

, T. J. KELLEHER BENDING momma Filed June 29, 1927 s sheets-sheet 1 N MN J I N. N.\\ m u v v knlwvw W V 0 0 w 4/ QWM o o o o o o o o mi mJ w n mL PA T u o o o c a a o a hm mm mm g Dec. 25, 192

T. J. KELLEHER BENDING MACHINE Filed June 29, 1927 3 Sheets-Sheet.- 2

Dec. 25, 1928. 1,696,849

. T. J. KELLEHER BENDING MACHINE v Filed June 29, 1.92? 3 Sheets- Sheet 5 Z nfeniw:

Patented Dec. 25, 1928.

THOMAS J. KELLEHER, OF CHICAGO, ILLINOIS.

BENDING MACHINE.

Application filed June 29, 1927. Serial No. 202,343.

lhis machine relates to a machine adapted to bend sheet metal plates and strips of ductile material, for architectural and other purposes.

Among the objects of this invention is to obtain a machine by means of which sheet metal of considerable thickness and length can be bent, without said machine being of nate a any considerable weight, and without the meeting edges of the dies of the machine being forced to bend out of horizontal planes. An additional object is to obtain a bending machine which is economically made, is durable, not liable to be broken, or to get out of order, and one the operation whereof is readily understood by those familiar with the art of bending sheet metal. An additional object is to obtain a bending machine which will be economical of the power required to operate it.

In the drawings referred to Fig. 1 is a front elevation of a construction embodying my invention.

Fig. 2 is an elevation of one end of the construction illustrated in Fig. 1.

Fig. v3 is a rear elevation of said construc-' Figs. 7 and 8,-respectively, are perspcc-- tives of link members of an additional toggle joint which is the driving element of the series of toggle oints of the machine.

A reference character applied to desiggiven part indicates said part throughout the several figures of the drawings, wherever the same appears.

1 represents I-beams, which are arranged to form the base of the machine. 2 represents metal plates which' are mounted on horizontal plate 3, which is interposed between said metal plates and the 'I-beams 1. Metal plates 2 are in vertical parallel planes.

4 represent bolts and 5 a plate which is rigidly securedto' parallel plates 2 by said bolts. The vertical plate 5 is also, preferably secured to the forward edge of plates 2 by welding, as at 6, Fig. 2, in the ordinary manner. 7 represents bolts by means of wh1ch the motor 'X, (which forms no part of the invention), is secured on table 8, 9 represent diagonally extending bars which, at their lower ends, are secured to adjacent plates 2 by bolts 10, and to table 8, at their upper ends, by bolts 11. 12 represents a bar which is secured, at its lower end, by angle iron 13 and bolts 14, to plate 3. Bar 12 is also secured in position by bars 12% Figs. 2 and 3, and bolts 12 and 13. 15 represents a journal bearing which is mounted on the upper end of bar 12, as by bolts 16, Fig. 3. 17, Figs. 1, 2 and 5, represents a bed, on which the lower die, 18, is mounted, being secured thereto, as by the bar's 19 and bolts 20. 21, Fig. 2, represents the base of bed 17, and is mounted on the several vertical plates 2; said plates being cut away to obtain the horizontal tables 22. 23 represents the upper and movable die, which is mounted on the lower edge of the horizontally disposed bar 24. 25 represent the members of a plurality of toggle joints forming a series, which are, respectively, pivotally joined by pins 32. The'lower members of each series of toggle joints are joined at their lower ends, by pivots 26 to said horizontal bar'24. The bar 24 is cut away, adjacent to the lower ends of said lower members 25, as at 27 Fig. 1, to permit said members to be pivotally moved on pins 26 into the position in which they are illustrated in Fig. 1, or'into substantially said" position. 2E5 represents a member or tongue at one end of member 25, and 29 a recess at the other end of said member, (see Fig. 6). 30 represent apertures at one end of member 25, and 31 a similar aperture at the other end of said member. Said recess 29, in one end of member 25, permits the tongue 28 of an additional member 25, which is to be linked thereto, to be inserted therein, and a pin, 32, to be inserted in apertures 30, 31, to pivotally join. said members. The recess .29 in the lowerend of the lower one of the pivotally joined members' 25, permits, the

'upperedge, 31, of bar 24, to be inserted tures whereby said bars are mounted on pivots 82, and secured thereon as by cotter pins 8 1. One of said bars 33 join the several toggle joints on the left hand side of the machine as viewed in Fig. 1, and the other one of said bars 88 join the toggle joints on the right hand side of the machine. 35, 86, Figs. 1, 7 and 8, represent the members of an additional toggle joint, which pivotally join adjacent ends of bars The bars 33 extend towards each other beyond the men hers 25 which form the two series of toggle joints. The lower ends of members 35, 86, arerespectively provided with apertures 37, and in assembling; said members 85, 86, the apertures 87 respectively are made to register with corresponding apertures adjacent to the ends of bars 88, so that pins 88 may extend tl'irough said apertures inhars and members 85, 86', to pivotally join said me1nhers to said bars. The upper end of memher 85 is proid'ed with recess 89 and aperture 40, and the upper end of member is provided with tongue l and aperture When members 35-, 86-, are assembled, the tongue 4'11 or member 36 is placed in recess 8-9, or member 85, and apertures it), 42 are made to register, so that pin 48, Figs. 1 and 1, may extend through. 44, Figs. 1, .2 and 4, represent horizontal bars which extend the length of the machine, the front one of said bars being bent, as indicated.- by character 45, in Figs. 1 and 2, to position the part 41-6 of said front har t i, in front of the mom-- hers 35 and 86 of the toggle joint which joins adjacent ends of bars 83. Bars M are mounted on pins or bolts 47, which form the fulcr ms of the upper ends of the upper members 25 of the two series of toggle oints.

48 represent vertical members, which are provided with recesses at their lower ends into which tongues 28 of the upper ones of the upper members 25 of the two series of toggle joints extend, and with apertures through which the several pins or bolts f7, extend.

T 1e upper ends of members l8 are provided with longitudinally extending holes which are, respectively, provided with internal screw threads, and lt) represent external screw threads corresponding with and fitting into said internal screw threads. Screw threads d9 are on the lower ends of vertical members which rotatably mounted in plates 2, ad' acent to the forward edges thereof, and 50' represent worm gears, (Figs. 1 and 2), which are rigidly cured on the upper ends of said vertical members, to turn therewith. 51 represent spirals or worms which intermesh with the teeth of worm gears 56. Worms 51 are rigidly secured on shaft 52, and said shaft is rotatively mounted in brackets 53.

The bars 44 and the upper ends of the members 25 of the two series of toggle joints, are adjusted vertically by means of respond with the thickness of the sheets of metal which are designed to be bent he tween bed die 18 and movable die 28.

54 represents a rota ive shaft which mounted in journal bearings 15, 55. 56 represents a hub which is provided with ya groove, and 57 represents a disk which is, preferably, integral with hub. 56, and which necessarily is secured to said hub. to turn therewith. The shaft 54 is provided with a key way, 58. 59 represents a handle which is fulcruniedon pin 60, and 61 represent pins which are rigidly secured in the upper forked end of handle 59, to extend into the groove in hub 56, to control the sliding position of said huh and of disk 57 on; shaft 54. 62 represents the movable member of a friction clutch and 68. spring members interposedhetween disk 57 and movable meniher 62 of the friction clutch. Hub 56, disk 57 and movable member 62 are keyed to shaft 54,.to turn therewith, and are slida-ble on said shaft. 64. represents a clutch member which is loosely mounted on shaft 54, and 65 represents a pullez which is pro vided with a heavy rim, to act as a balance wheel, which is also loosely mounted on shaft 54-,- and' is rigidly secured to clutch member 64:. 66 represents a driving belt which extends over the driving pulley 66 on the shaft of motor X, and overthe wheel 65, thereby driving said wheel 65 and clutch member 6 1, when said motor X is energized. To cause shaft 54 to rotate the mov able clutch member 62 is, by means of handle 59, hub 56, disk 57, and interposed spring members 68, moved aloi'igthe shaft 54 into frictional engagement with clutch member 6 1-.

67, 68, respectively represent shafts which are rotatably mounted in suitable journal bearings mounted on the plates 2. The several shafts 54, 67 and 68, are connected by reducing gears, which comprise the pinion 69, rigidly mounted on shaft 54-, the gear wheei 7 0 mounted on shaft 67, to mesh. with pinion 69; the pinion 71 mountedon shaft 67, and arrai'iged to rotate with gear wheel 70, and gear wheel 72, which, is keyed on. shaft 68, as by key 78, Fig. 8, to rotate the with. The teeth on said wheel 72 are ar to mesh with the teeth on pinion 71. y the above means, when the clutch members 62, 64:, are engaged in the manner hereinbefore described, by the mov remit of handle 59, (to the right as viewed in Fig. 2), the shaft 68 rotated by the rotation of shaft but at a greatly reduced. speed.

74 represents an. eccentric which is rigidly mounted on shaft 68, to turn there with. 75 represents an eccentric strap made of two parts and mounted on eccentric 74;

said parts or members being secured together by bolts 76. The strap is provided with depending member 77, having a recess at the lower end thereof in which the joined upper ends of members 35 and 36 of the additional toggle joint extend, and with an aperture in which pin 43 extends.

When the shaft 52 is turned to adjust members 48, it is manually operated, preferably by a Stillso-n wrench.

The operation. of the machine is; the motor X being energized and the members 62 and 64: of the friction clutch being engaged, shafts 54, 67 and 68 are rotated. Thereby eccentric 74 is turned and depending mem ber 77 of eccentric strap 75 is forced down and the additional toggle joint formed by members 35 and 36 is actuated and said members are forced into a substantially horizontal plane. The bars 84- are thereby forced longitudinally, one to the left and one to the right as viewed in Fig. 1, and the two series of toggle joints formed by the members 25 are forced into substantially vertical planes, thereby forcing bar 24 and upper die 23 down, and on to a sheet or strip of metal interposed between dies 18 and 23.

The clutch members 62 and 64 being held in engagement until the shaft 68 has made a complete revolution, or substantially so, the several toggle joints will be returned to the position illustrated in Figs. 1 and -2, with die 23 raised'from die 18.

In placing a strip or sheet of ductile metal between dies 18 and 23, of less length or width than thelength of said dies, the ends or sides of said strip or sheet is placed at substantially equal distances from the ends of the dies.

I claim:

1. In a bending machine, two series of toggle joints, pivots oining the meeting ends of the members of said joints, one of said series comprising a plurality of toggle joints, the pivotally joined ends of said members being normally on one side of vertical planes parallel to the ends of the machine and extending through the addi tional pivots of said members, and the other of said series con'iprising a plurality of loggle joints the pivotally joined ends of said. members being normally on the other side of vertical planes also parallel to the ends of the machine and extending through the additional pivots of said last named members, bars horizontally mounted on said .pivots to connect the pivotally joined ends of the members of each series, in combination with an additional toggle joint, one end of the members thereof pivotally joined and the other end of said members pivotally connected to said horizontal bars adjacent to the ends thereof, means to force said joined ends, to move the members of said additional toggle joint substantially into a horizontal plane and the members of the toggle joints of both said series into substantially vertical planes, a bar mounted on the lower ends of the lower members of said series of toggle joints, a die on said bar, and an additional die, said dies arranged to co-act.

2. In a bending machine, two series of toggle joints, pivots joining the meeting ends of the members of said joints, one of said series comprising members the pivotally joined ends whereof are normally on one side of vertical planes parallel to the ends of the machine and extending through th additional pivots of said members, and the other of said series comprising members the pivotally joined ends whereof are normally on the other wide of vertical planes also parallel to the ends of the machine and extending through the additional pivots of said last named members, means to vertically adjust the upper ends of the upper members of said series, bars horizontally mounted on said first named pivots to connect the pivotally joined ends of the members of each series, in combination with an additional toggle joint, one end of the members thereof pivotally joined and the other end of said members, respectively, pivotally connected to one of said horizontal bars, means to force said joined ends to move the members of said additional toggle joint substantially into a horizontal plane and the members of the toggle joints of both said series into substantially vertical planes, a bar, pivots arranged to attach said bar to the lower ends of the lower members of said series of toggle joints, a die on said bar and an additional die, said dies arranged to co-act.

3. In a bending machine, two series of toggle joints, pivots joining the meetin ends of the members of said joints, one or said series comprising members whereof said meeting ends are on one side of vertical planes parallel to the ends of the machine and extending through the additional pivots of said members, and the other of said series comprising members whereof the meeting ends are on the other side of vertical planes also parallel to the ends of the machine and extending through the additional pivots of said last named members, when said toggle joints are in normal position, bars horizontally mounted on said pivots to connect said members pivotally connected to said horizontally mounted bars, in combination with a rotatably mounted shaft, an eccentric rigidly mounted on said shaft, controlled means to turn said shaft, an eccentric strap,

lllO

, through the a a depending member on said sra p, the lower end of said depending member connected to the pivot joining the meeting \(lS of said dditional toggle joint, a bar, pivots arranged to attach saio bar to the lower of the lower members of said series of toogle joints, a die on said bar and an additional die, said dies arranged to co-act.

4. In a bending machine, two series of toggle joints, pivots arranged to join the meeting ends of the memb of said join s l said pivots in one of said ser es norma positioned to one side of vertical planes parallel to the ends of the machine and e."- tending through the additional pivots said members, and said pivots in the other one of said series normally positioned. on the other side of vertical planes also parallel to the ends of the ll'ltljlllld and tending through the additional. pivots oli said. l named members, bars horizontally mounted on said pivots to connect the 'iivotally joined ends of the members of each series, means to vertically adjust the upper ends of the upper members of said series, an additional toggle joint, one or the en oi the members thereof pivotally joined. and the other of the ends of said inenjibers pivotally connected to said horizontal mounted bars, in combination with a rote sh trolled means to turn said shaft, an ecccn rigidly mounted on said shalt, an eccentric strap, a depending member o said stra the lower end of said depend mom connected to the pivot joining the meet ends of the men'ibers of said additiona gle joint, a bar, pivots arranged to acu said bar to the lower ends of the lower members of said series of toggle joints, a die on said bar, and an additional die, raid dies ar anged to co-act.

In a bending machine, two series of togde joints, pivoss arranged to join the meeting ends of the membcqs of said joints, said pivots in one of said series normally positioned on one side at vertical planes parallel to the ends of the machine and ex tending through the onai pivots of said members, and said pivots in the other of said series noi 1y positioneiil on the other side or vet also parallel to the ends o the l H i l Mel's named members, bars l v on ill pivots to connec' ends of d member" iii ogp le joints tion 7 other one oi said ends pivotally connected to said horizontally mounted bars, means to move the joined ends of said members of said additional toggle joint so that said members are substantially in a horizontal plane and the members of said series of toggle joints are substantially in vertical planes, at bar, pivots arranged to connectsaid bar to the lower ends of the lower members of said series oi toggle oints, die on said bar and an additional die, said dies arranged to 00- act.

6. In a bending machine, a plurality oi vertical metal plates secured inparallel planes, portions of the sides of said plates removed to obtain a plurality of horizontal supports and a like number of overhanging portions of said plates above said tables, in combination with a bar adapted to form base of a die, a die on said base, additional bar, an additional die on said additional bar arranged to co-act with said first 1 ed die, controlled means to move said a sntional bar, said means to move comprising; a plurality of series of toggle joints positioned below said over-hanging portions oi? said vertical plates, and means to actuate said toggle joints.

T. In a bending machine, a plurality of one of the sides thereof to obtain horizontal supports and over-hanging portions above said supports, in combination with a die base mounted on said. supports, a die on said base, a bar movably mounted below said over-hanging portions and an additional die attached to said h said additional die ar ranged to co-act with said first named die, a plurality oi vertical members adjustably mounted on aid overhanging: portions, means connecting said vertical members to uniformly adjustthe some, a plurality oi joints pivotally connected to said mov ly mounted bar and to said adjustably mounted vertim members, and controlled mea s to jointly actuate said toggle joints.

in a bending nnichine, a plurality o'li metal plliites secured vertically in. parallel planes and having aportion removed from one of the sides (5 "eacu thereol to obtain horizontal supports and over-hanging porabore id. supports, in combination mounted on said supports, a movably moimted r arranged to coact with he, a plurality ot vertical. zul us'ably mounted on said overbers, an additional toggle joint, a plurality of horizontal bars arranged to connect the joined ends of the members of said plurality ,of toggle joints, pivots, the members of said 5 additional toggle joint pivotally connected by one of said pivots and said members of said additional toggle joint connected to said horizontal. connecting bars by additional ones of said pivots, and controlled means to move the members of said additional toggle joint from their normal position substantially into a horizontal plane.

THOMAS J. KELLEHER. 

